Posts Tagged ‘ teaching ’

Princeton Abandons Grade Deflation Plan . . .

November 23, 2014
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Princeton Abandons Grade Deflation Plan . . .

. . . and Kaiser Fung is unhappy. In a post entitled, “Princeton’s loss of nerve,” Kaiser writes: This development is highly regrettable, and a failure of leadership. (The new policy leaves it to individual departments to do whatever they want.) The recent Alumni publication has two articles about this topic, one penned by President […] The post Princeton Abandons Grade Deflation Plan . . . appeared first on Statistical…

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Nominal, Ordinal, Interval, Schmordinal

November 18, 2014
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Nominal, Ordinal, Interval, Schmordinal

Everyone wants to learn about ordinal data! I have a video channel with about 40 videos about statistics, and I love watching to see which videos are getting the most viewing each day. As the Fall term has recently started … Continue reading →

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“Patchwriting” is a Wegmanesque abomination but maybe there’s something similar that could be helpful?

November 12, 2014
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Reading Thomas Basbøll’s blog I came across a concept I’d not previously heard about, “patchwriting,” which is defined as “copying from a source text and deleting some words, altering grammatical structures, or plugging in one synonym for another.” (See here for further discussion.) As Basbøll writes, this is simply a variant of plagiarism, indeed it’s […] The post “Patchwriting” is a Wegmanesque abomination but maybe there’s something similar that could…

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Solution to the sample-allocation problem

October 26, 2014
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See this recent post for background. Here’s the question: You are designing an experiment where you are estimating a linear dose-response pattern with a dose that x can take on the values 1, 2, 3, and the response is continuous. Suppose that there is no systematic error and that the measurement variance is proportional to x. You […] The post Solution to the sample-allocation problem appeared first on Statistical Modeling, Causal Inference,…

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Solution to the problem on the distribution of p-values

October 25, 2014
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See this recent post for background. Here’s the question: It is sometimes said that the p-value is uniformly distributed if the null hypothesis is true. Give two different reasons why this statement is not in general true. The problem is with real examples, not just toy examples, so your reasons should not involve degenerate situations such as […] The post Solution to the problem on the distribution of p-values appeared first on…

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Solution to the helicopter design problem

October 24, 2014
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See yesterday’s post for background. Here’s the question: In the helicopter activity, pairs of students design paper ”helicopters” and compete to create the copter that takes longest to reach the ground when dropped from a fixed height. The two parameters of the helicopter, a and b, correspond to the length of certain cuts in the […] The post Solution to the helicopter design problem appeared first on Statistical Modeling, Causal…

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Some questions from our Ph.D. statistics qualifying exam

October 23, 2014
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In the in-class applied statistics qualifying exam, students had 4 hours to do 6 problems. Here were the 3 problems I submitted: In the helicopter activity, pairs of students design paper ”helicopters” and compete to create the copter that takes longest to reach the ground when dropped from a fixed height. The two parameters of the […] The post Some questions from our Ph.D. statistics qualifying exam appeared first on Statistical…

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Three ways to present a probability forecast, and I only like one of them

October 20, 2014
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Three ways to present a probability forecast, and I only like one of them

To the nearest 10%: To the nearest 1%: To the nearest 0.1%: I think the National Weather Service knows what they’re doing on this one. The post Three ways to present a probability forecast, and I only like one of them appeared first on Statist...

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Statistical Communication and Graphics Manifesto

October 15, 2014
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Statistical Communication and Graphics Manifesto

Statistical communication includes graphing data and fitted models, programming, writing for specialized and general audiences, lecturing, working with students, and combining words and pictures in different ways. The common theme of all these interactions is that we need to consider our statistical tools in the context of our goals. Communication is not just about conveying […] The post Statistical Communication and Graphics Manifesto appeared first on Statistical Modeling, Causal Inference,…

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My course on Statistical Communication and Graphics

October 15, 2014
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My course on Statistical Communication and Graphics

We will study and practice many different aspects of statistical communication, including graphing data and fitted models, programming in Rrrrrrrr, writing for specialized and general audiences, lecturing, working with students and colleagues, and combining words and pictures in different ways. You learn by doing: each week we have two classes that are full of student […] The post My course on Statistical Communication and Graphics appeared first on Statistical Modeling,…

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